Amazon Linux 2023 : python3.11, python3.11-devel, python3.11-idle (ALAS2023-2026-1998)

high Nessus Plugin ID 332019

Synopsis

The remote Amazon Linux 2023 host is missing a security update.

Description

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1998 advisory.

CR/LF bytes were not rejected by HTTP client proxy tunnel headers or host. (CVE-2026-1502)

The incremental HTML parser (html.parser.HTMLParser) allows for CPUdenial-of-service through repeated unterminated markup declarations whenprocessing uncontrolled data. (CVE-2026-15308)

In the Tarfile.extract() function, the filter parameter is not passed properly when extracting hardlinks.
An affected system that extracts content from untrusted tar files could end up writing files with an unexpected uid/gid despite the user passing filter='data' to the extract() function. (CVE-2026-4360)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Run 'dnf update python3.11 --releasever 2023.12.20260803' or or 'dnf update --advisory ALAS2023-2026-1998 --releasever 2023.12.20260803' to update your system.

Plugin Details

Severity: High

ID: 332019

File Name: al2023_ALAS2023-2026-1998.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 8/4/2026

Updated: 8/4/2026

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Nessus Agent, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.75

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS Score Source: CVE-2026-4360

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: High

Base Score: 8.7

Threat Score: 6.6

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS Score Source: CVE-2026-15308

Vulnerability Information

CPE: cpe:/o:amazon:linux:2023, p-cpe:/a:amazon:linux:python3.11-debug, p-cpe:/a:amazon:linux:python3.11-debuginfo, p-cpe:/a:amazon:linux:python3.11-debugsource, p-cpe:/a:amazon:linux:python3.11-devel, p-cpe:/a:amazon:linux:python3.11-idle, p-cpe:/a:amazon:linux:python3.11-libs, p-cpe:/a:amazon:linux:python3.11-test, p-cpe:/a:amazon:linux:python3.11-tkinter, p-cpe:/a:amazon:linux:python3.11

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 8/4/2026

Vulnerability Publication Date: 4/10/2026

Reference Information

CVE: CVE-2026-1502, CVE-2026-15308, CVE-2026-4360

IAVA: 2026-A-0360-S, 2026-A-0549

Detections

Analytics